JP2022541209A - Motion guide device and lubrication path parts used in the motion guide device - Google Patents

Abstract

【Task】
To provide a motion guide device capable of widening a lubrication path when lubricating with grease and narrowing the path of lubrication when lubricating with oil to easily achieve good lubrication.
[Solution]
A rail 2 and a moving body 3 are provided. The moving body 3 includes a moving body main body 3a, a lid body 3b, and a circulation part 4. The lid body 3b is formed with a first lubrication groove 3b4. When using grease, the motion guide device 1 supplies the lubricant by utilizing the grease lubrication path formed by the first lubrication groove 3b4 and the circulating part 4, wherein the first lubrication groove 3b4 has a smaller sectional area than the A lubrication path component 5 having a second lubrication groove 5c is further provided, and when oil is used as a lubricant, the oil lubrication path formed by the first lubrication groove 3b4 and the second lubrication groove 5c is used to lubricate the lubricant. An exercise guide device 1 characterized by supplying.
[Selection drawing] Fig. 6a

Description

TECHNICAL FIELD The present invention relates to a motion guide device and a lubrication path component used in the motion guide device, and more particularly to a motion guide device having a lubrication path component provided with an oil supply structure and the lubrication path component.

A linear guide, which is a type of motion guide device, includes a track rail as a track base and a moving block as a moving body assembled movably along the track rail. A large number of balls as rolling elements are interposed between the track rail and the moving block so as to be able to roll. A large number of balls circulate in a circuit-like ball circulation path. The ball circulation path comprises a ball rolling groove provided on the track rail, and a loaded ball rolling groove provided on the moving block and facing the ball rolling groove provided on the track rail. , a no-load passage provided in the moving block and parallel to the loaded rolling path; and a U-shaped turning path provided in the moving block and connecting the loaded rolling path and the no-load path.

In the above linear guide, it is necessary to provide a lubricant supply structure for supplying lubricant to the direction change path.

For example, Patent Document 1 discloses a lubricant supply structure that is used in a linear guide and supplies lubricant to a direction changing path. Specifically, in Patent Document 1, a fitting recess is formed in an end plate, which is a lid as a part of a moving block, and a linear guide is fitted in the fitting recess and has a material hardness that is similar to that of the end plate. A separate member having the same or lower height is provided, a groove as a lubricant supply path is formed in at least one of the joint surfaces of the fitting recess and the separate member facing each other, and at least one of the joint surfaces facing each other is formed with a groove. On the other hand, one or two or more protrusions extending along the groove as the lubricant supply path were provided.

JP 2004-353698

However, Patent Document 1 described above has the following problems.

Specifically, when supplying grease as a lubricant, it is sufficient to increase the cross-sectional area of the lubricant supply path and shorten the length of the lubricant supply path. , the cross-sectional area of the lubricant supply path should be small and the length of the lubricant supply path should be shortened. If the lengths of the lubricant supply paths are made equal, the cross-sectional area of the lubricant supply path should be increased when supplying grease, and the cross-sectional area of the lubricant supply path should be decreased when supplying oil. As described above, the lubricating agent supply path requires a contradictory cross-sectional area when supplying grease and when supplying oil. In a conventional linear guide such as that of Citation 1, a lubricant supply path with an optimum width was designed to accommodate both grease lubrication and oil lubrication. However, as the amount of lubricant used has decreased in consideration of environmental impact, it has become difficult to design a lubricant supply path that can accommodate both grease lubrication and oil lubrication.

SUMMARY OF THE INVENTION The present invention has been devised in view of the circumstances described above, and aims to provide a motion guide device that can easily handle both grease lubrication and oil lubrication, and a lubrication path component used in the motion guide device. purpose.

In order to achieve the above object, the present invention provides a track base having rolling element rolling grooves formed on both left and right side surfaces along the longitudinal direction, and a track base capable of relative movement to the track base via a plurality of rolling elements. A moving body to be assembled is provided, and the moving body includes a load rolling-element rolling groove forming a load rolling path for the rolling element to roll in opposition to the rolling-element rolling groove, and the load rolling path. A moving body main body formed in parallel and provided with a no-load path for the rolling elements to roll; a cover fixed to both front and rear end faces of the moving body main body; and the moving body main body and the lid body and a circulation component provided between and, a direction changing path for connecting the loaded rolling path and the unloaded path to change the rolling direction of the rolling element is provided, and the lid is provided with An outer circumference side direction change portion of the direction change path is provided, the circulation component is provided with an inner circumference side direction change portion of the direction change path, and the circulation component is the inner circumference located on both left and right sides of the track base. The lid has a connecting portion that connects the side direction change portion, the lid has a fitting recess that accommodates the connecting portion, and the fitting recess is formed with a first lubricating groove, and grease is used as a lubricant. a motion guide device for supplying lubricant by using a grease lubrication path formed by the first lubrication groove and the circulation part, wherein a second lubrication groove having a cross-sectional area smaller than that of the first lubrication groove is provided. A lubrication path component is further provided, wherein the lubrication path component includes a fitting portion that is fitted into the first lubrication groove and an insertion portion that is inserted into the circulation component, and oil is used as a lubricant. When using, the oil lubrication path formed by the first lubrication groove and the second lubrication groove is utilized by inserting the insertion portion into the circulation component and fitting the fitting portion into the first lubrication groove. To provide a motion guide device characterized by supplying a lubricant by

With the motion guide device of the present invention, the lubrication path can be widened when lubricated with grease, and narrowed when lubricated with oil, so that good lubrication can be easily achieved.

In addition, by inserting the insertion portion of the lubrication path component into the circulation component with the motion guide device of the present invention, the oil can easily reach the inner peripheral side direction changing portion and the outer peripheral side direction changing portion that constitute the direction changing path. good lubrication can be achieved.

1 is a perspective view of a motion guide device of the present invention; FIG. 1 is an exploded perspective view of a motion guide device of the present invention; FIG. FIG. 3 is an exploded perspective view of a lid body, a lubrication path component and a circulation component in FIG. 2; FIG. 4 is a perspective view of a lid in FIG. 3; Figure 4b is a front view of the lid in Figure 4a; FIG. 4 is a perspective view of the circulating component in FIG. 3; Figure 5b is a back view of the circulating component in Figure 5a; Fig. 5c is a front view of the circulating component in Fig. 5c; Figure 4 is a perspective view of a first embodiment of the lubrication path component in Figure 3; FIG. 6b is a cross-sectional view taken along the line AA in FIG. 6a; FIG. 6b is a cross-sectional view taken along the line BB in FIG. 6a; FIG. 4 is a perspective view of the second embodiment of the lubrication path component in FIG. 3 , showing an enlarged view of the end of the fitting portion and positioning projections of the lubrication path component; FIG. 7b is a cross-sectional view taken along the line AA in FIG. 7a; FIG. 7b is a cross-sectional view taken along the line BB in FIG. 7a; Figure 7b is a perspective view from the back side of Figure 7a; Fig. 7b is a perspective view showing a state in which the lubrication path component of the second embodiment shown in Fig. 7a is assembled with the circulation component shown in Fig. 5a; FIG. 9 is a diagram showing a state before the assembly of the lubrication path component and the circulation component shown in FIG. 8 is assembled to the lid body shown in FIG. 4a; FIG. 9 is a diagram showing a state after the assembly of the lubrication path component and the circulation component shown in FIG. 8 has been assembled to the lid body shown in FIG. 4a; FIG. 9B is a perspective view of the assembly of the lid, the lubrication path component, and the circulation component shown in FIG. 9B as viewed from the back side, showing a state in which the positioning projections of the lubrication path component are inserted into the positioning holes of the lid.

The structure and function of each part of the present invention will be described in detail below with reference to the drawings. In the following description, the same or corresponding members and structures are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIG. 1, a linear guide 1 as a type of motion guide device includes a track rail 2 as a track base and a moving block 3 as a moving body assembled movably along the track rail 2. , the moving block 3 linearly moves along the longitudinal direction of the track rail 2 . Also, the track rail 2 is attached to a fixed side such as a base, and the moving block 3 attaches a guide object such as a table.

FIG. 2 is an exploded perspective view of the linear guide 1 of the present invention. Hereinafter, the linear guide 1 of the present invention will be described in detail using FIG.

As shown in FIG. 2, the linear guide 1 includes a track rail 2 having ball rolling grooves 2a formed on both left and right sides along the longitudinal direction, and a plurality of balls B as rolling elements interposed between the track rail 2 and the track rail 2. The moving block 3 includes a slider 3a as a moving body main body provided with a loaded ball rolling groove 3a1 and an unloaded passage 3a2, and both front and rear ends of the slider 3a. and an end plate 2b as a lid fixed to the surface. Here, the so-called "left and right" refer to left and right with respect to the center of the track rail 2 when the track rail 2 is viewed from the longitudinal direction, and the same applies to the following description. The loaded ball rolling groove 3a1 of the slider 3a and the ball rolling groove 2a of the track rail 2 face each other to form a loaded rolling path for the balls B to roll, and the no-load path 2a2 of the slider 3a is formed in this way. It is formed in parallel with the load rolling path and is for the ball B to roll.

As shown in FIG. 2, the ball holding member 6 is provided between the track rail 2 and the moving block 3 to hold the balls B. and is formed in a plate-like shape extending in the longitudinal direction of the track rail 2, and has a ball holding portion perpendicular to the longitudinal direction, the ball holding portion simultaneously holding the balls B arranged in two upper and lower rows. ing.

As shown in FIG. 2 and later-described FIG. 4a, the end plate 3b is provided with an outer peripheral direction changing portion 3b2, and an inner peripheral direction changing portion 4a is provided between the slider 3a and the end plate 3b. A formed circulation part 4 is provided, whereby a U-shaped direction change path is formed by the outer circumference side direction change part 3b2 of the end plate 3b and the inner circumference side direction change part 4a of the circulation part 4. . This direction changing path connects the loaded rolling path and the no-load path 3a2 to change the rolling direction of the balls B, so that the moving block 3 can move freely along the track rail 2 in linear motion. is. Furthermore, as shown in FIG. 2, the screws 8a are for screwing and fixing the end plate 3b and the circulation member 4 to the slider 3a.

As shown in FIG. 2, dustproof parts 7 are provided on the outside of end plates 3b installed on the front and rear end faces of the slider 3a. A lubricant supply nozzle of lubricant supply means (not shown) for supplying lubricant is connected to the through hole 7a, and the through hole 7a communicates with a lubricant supply hole 3b1 formed in the end plate 3b. Therefore, the lubricant is supplied to the direction change path through the lubricant lubrication path formed in the end plate 3b by the lubricant supply means, and the direction change path, the load rolling path, and the no-load path 3a2 are rolled. The moving ball B can be lubricated. Furthermore, as shown in FIG. 2, the screw 8b is for screwing and fixing the dust-proof component 7 to the end plate 3b.

Further, as shown in FIG. 4a, the first lubricating grooves 3b4 of the end plate 3b are in communication with the direction changing paths located on the left and right sides in the longitudinal direction of the track rail 2 of the linear guide 1, respectively. As a result, when lubricant is supplied to the lubricant supply hole 3b1 through the through hole 7a of the dustproof component 7 by the lubricant supply means, the lubricant is supplied to the left and right sides of the track rail 2 through the first lubrication groove 3b4. It can be supplied to the turning road.

3 to 5c, the grease lubrication path when grease is supplied as a lubricant by the lubricant supply means in the linear guide 1 of the present invention will be described in detail below.

As shown in FIGS. 3 to 5c, the circulation part 4 has a connecting portion 4b that connects the inner peripheral direction changing portions 4a located on the left and right sides of the track rail 2, and the end plate 3b accommodates the connecting portion 4b. A first lubricating groove 3b4 is formed in the fitting recessed portion 3b3 while having the fitting recessed portion 3b3.

When the circulation component 4 is directly attached to the end plate 3b, specifically, the connection portion 4b of the circulation component 4 is fitted into the fitting recess 3b3 of the end plate 3b, and the inner peripheral direction of the circulation component 4 When a U-shaped direction change path is configured from the change portion 4a and the outer direction change portion 3b2 of the end plate 3b, grease is used as a lubricant when lubricating the linear guide 1, and the first lubrication groove 3b4 and the circulation By supplying grease to the grease lubrication path configured by the part 4, the balls B rolling on the direction change path, the loaded rolling path, and the no-load path 3a2 are lubricated.

5a and 5b, the circulation component 4 is formed with a third lubrication groove 4c connected to the first lubrication groove 3b4. It is formed at least at a location facing the direction changing portion 4a. As a result, when supplying grease to the grease lubrication path formed by the first lubrication groove 3b4 and the circulation component 4, the grease passes through the first lubrication groove 3b4 and then flows into the third lubrication groove 4c. It is guided from the lubrication groove 4c to between the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a, so that the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a in the circulation component 4 The ball B can be lubricated by reliably reaching the inner circumferential direction changing portion 4a. In order to evenly flow the grease to the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a, the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a are arranged. 4a can be provided with different opening widths.

Next, with reference to FIGS. 3, 6a to 6c, and 7a to 7d, the oil lubrication path when oil is supplied as lubricant by the lubricant supply means in the linear guide 1 of the present invention will be described in detail.

As shown in FIG. 3, a lubrication path component 5 is provided between the end plate 3b and the circulation component 4. As shown in FIG.

6a is a perspective view of the first embodiment of the lubrication path component 5 in FIG. 3, FIG. 6b is a cross-sectional view along line AA in FIG. 6a, and FIG. 6c is a cross-sectional view along line BB in FIG. 6a. is.

As shown in FIG. 6a, the lubrication path component 5 includes a fitting portion 5a that fits into the first lubrication groove 3b4, and an insertion portion 5b that is inserted into the circulation component 4, and the first lubrication groove A second lubricating groove 5c having a smaller cross-sectional area than 3b4 is formed. More specifically, the insertion portion 5b is a portion that is inserted into the third lubrication groove 4c of the circulation component 4, and the second lubrication groove 5c is formed in the fitting portion 5a and the insertion portion 5b.

When the circulation component 4 is attached to the end plate 3b via the lubrication path component 5, specifically, the insertion portion 5b of the lubrication path component 5 is inserted into the third lubrication groove 4c of the circulation component 4, and the lubrication path component 5 The fitting portion 5a is fitted into the first lubrication groove 3b4 so that the second lubrication groove 5c formed in the fitting portion 5a of the end plate 3b faces the first lubrication groove 3b4 of the end plate 3b, and the circulation component 4 The connecting portion 4b is fitted in the fitting recess 3b3 of the end plate 3b, and the direction is changed in a U shape from the inner peripheral side direction changing portion 4a of the circulation component 4 and the outer peripheral side direction changing portion 3b2 of the end plate 3b. When the path is configured, oil is used as a lubricant when lubricating the linear guide 1, and the direction is changed by supplying the oil to the oil lubrication path configured by the first lubrication groove 3b4 and the second lubrication groove 5c. It lubricates the ball B rolling on the road, the loaded rolling road, and the unloaded path 3a2.

As a result, in the linear guide 1 of the present invention, the lubrication path can be widened when lubricated with grease, and narrowed when lubricated with oil by providing the lubrication path component 5 as described above. Easy to achieve good lubrication.

In addition, the third lubrication groove 4 c of the circulation component 4 shown in FIGS. 5 a and 5 b is also connected to the second lubrication groove 5 c of the lubrication path component 5 . As a result, when oil is supplied to the oil lubrication path formed by the first lubrication groove 3b4 and the second lubrication groove 5c, the oil passes through the first lubrication groove 3b4 and the second lubrication groove 5c facing each other and then the third lubrication groove 5c. It flows into the lubrication groove 4c and is further guided from the third lubrication groove 4c to between the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a. The ball B can be lubricated by reliably reaching the inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a.

In other words, in the linear guide 1 of the present invention, by inserting the insertion portion 5b of the lubrication path component 5 into the third lubrication groove 4c of the circulation component 4, the oil forms a direction change passage on the inner peripheral side direction change portion. 4a and the outer peripheral side direction changing portion 3b2 can be easily reached and good lubrication can be easily realized.

2, 6b and 6c, when viewed along the longitudinal direction of the track rail 2, the thickness d of the insertion portion 5b of the lubrication path component 5 is greater than the thickness d of the fitting portion 5a of the lubrication path component 5. is formed smaller than the thickness D of the

Thereby, the insertion portion 5 b of the lubrication path component 5 can be easily inserted into the third lubrication groove 4 c of the circulation component 4 .

Furthermore, as shown in FIG. 6a, the side surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 is chamfered.

Although not shown, the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 (that is, the surface on which the second lubrication groove 5c is formed) may be chamfered.

Of course, although not shown, the side surface and the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 may be chamfered.

Thereby, the insertion portion 5 b of the lubrication path component 5 can be more easily inserted into the third lubrication groove 4 c of the circulation component 4 .

Further, as shown in FIGS. 6b and 6c, ribs 5d are formed on both sides of the second lubrication groove 5c of the lubrication path component 5 to prevent leakage of oil.

The first embodiment of the lubrication path component 5 of the present invention has been described above.

A second embodiment of the lubrication path piece 5 of the invention will now be described with reference to FIGS. 7a to 7d.

In the second embodiment of the lubricating path component 5, members and structures that are the same as or corresponding to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

7a is a perspective view of the second embodiment of the lubrication path component 5 in FIG. 3, showing an enlarged view of the end portion 5a1 and the positioning projection 5a of the fitting portion 5a of the lubrication path component 5, and FIG. 7c is a cross-sectional view taken along the line AA, FIG. 7c is a cross-sectional view taken along the line BB in FIG. 7a, and FIG. 7d is a perspective view seen from the rear side of FIG. 7a.

As shown in FIGS. 7a to 7d, similar to the first embodiment, the lubrication path component 5 of the second embodiment also has a fitting portion 5a, an insertion portion 5b, a second lubrication groove 5c, and a rib 5d. Prepare.

As shown in FIG. 7a, the lubrication path component 5 of the second embodiment differs from the lubrication path component 5 of the first embodiment in the shape of the end portion 5a1 of the fitting portion 5a.

Specifically, as shown in FIGS. 4a and 4b, the end portion 3b41 connected to the outer direction changing portion 3b2 of the first lubricating groove 3b4 of the end plate 3b is tapered. As shown in FIG. 7a, the end portion 5a1 connected to the insertion portion 5b of the fitting portion 5a of the lubrication path component 5 is formed in a tapered shape corresponding to the tapered shape of the end portion 3b41.

By forming the end portion 3b41 of the first lubricating groove 3b4 of the end plate 3b in a tapered shape, the pressure of the grease is can be increased to achieve better lubrication.

Also, as shown in FIG. 7a, the lubrication path component 5 of the second embodiment differs from the lubrication path component 5 of the first embodiment in that it further includes a positioning protrusion 5e.

Specifically, as shown in FIG. 7a, the lubrication path component 5 is formed with a positioning projection 5e for positioning with the end plate 3b, and correspondingly, as shown in FIGS. 4a and 4b, the end plate A positioning hole 3b5 for fitting the positioning projection 5e is formed in 3b.

In the linear guide 1 of the present invention, by providing the positioning protrusion 5e and the positioning hole 3b5 as described above, when the lubrication path component 5 is fitted and inserted into the end plate 3b, the lubrication path component 5 and the end plate 3b positioning can be easily realized.

Further, as shown in FIG. 7a, a part of the second lubrication groove 5c is formed in the positioning protrusion 5e.

As a result, when inserting the positioning projection 5e into the positioning hole 3b5 of the end plate 3b, the positioning projection 5e can be easily deformed and inserted into the positioning hole 3b5.

In addition, as shown in FIG. 7a, the side surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 of the second embodiment is also chamfered.

Although not shown, the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 (that is, the surface on which the second lubrication groove 5c is formed) may be chamfered.

Of course, although not shown, the side surface and the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path component 5 may be chamfered.

As a result, the insertion portion 5b of the lubrication path component 5 of the second embodiment can be more easily inserted into the third lubrication groove 4c of the circulation component 4 like the lubrication path component 5 of the first embodiment.

The second embodiment of the lubrication path component 5 of the present invention has been described above.

Next, with reference to FIG. 8, an assembly in which the lubrication path component 5 of the second embodiment is assembled to the circulation component 4 shown in FIG. 5a will be described.

As shown in FIG. 8, the insertion portion 5b of the lubrication path component 5 is inserted into the third lubrication groove 4c of the circulation component 4, and the ends of the insertion portion 5b are inserted into the upper and lower inner peripheral direction changing portions 4a of the circulation component 4. reach a position in between. At this time, in order to ensure a stable supply of oil when supplying oil, the joints between the lubrication path part 5 and the circulation part 4 are in close contact with each other without any gaps between them. It is preferable that there is no deviation or rattling between them.

The assembly in which the lubrication path component 5 of the first embodiment is assembled with the circulation component 4 shown in FIG. 5a is substantially the same as the assembly shown in FIG. When the lubricating path component 5 and the circulation component 4 are in contact with each other without a gap, the lubrication path component 5 and the circulation component 4 are in close contact with each other.

Next, the assembled state of the end plate 3b, the lubrication path component 5, and the circulation component 4 will be described with reference to FIGS. 9a to 9c.

FIG. 9a is a diagram showing the state before the assembly of the lubrication path component 5 and the circulation component 4 shown in FIG. 8 is assembled to the end plate 3b shown in FIG. 4a. When assembling the assembly of the lubrication path component 5 and the circulation component 4 shown in FIG. 8 to the end plate 3b shown in FIG. 4a, the lubrication path component 5 is assembled so that the positioning projections 5e are aligned with the positioning holes 3b5 of the end plate 3b. As a result, the assembly of the end plate 3b, the lubrication path component 5 and the circulation component 4 shown in FIG. 9b can be easily obtained.

Also, as shown in FIGS. 9c and 4b, the center of the positioning hole 3b5 of the end plate 3b and the center of the lubricant supply hole 3b1 of the end plate 3b are aligned.

As a result, when lubricating the linear guide 1 using oil as a lubricant, the oil is supplied directly from the lubricant supply hole 3b1 to the positioning projection 5e that is fitted in the positioning hole 3b5 of the lubrication path component 5. can be easily supplied to the turning path to achieve good lubrication.

If the lubrication path component 5 is made of a soft material, the end plate 3b is pressed to deform the soft lubrication path component 5 when the end plate 3b is attached to the slider 3a. The path component 5 is brought into close contact with the end plate 3b to effectively prevent oil leakage.

The specific structure of the linear guide 1 of the present invention has been described above with reference to specific embodiments shown in FIGS.

As described above, in order to achieve the object of providing a linear guide 1 that can easily handle both grease lubrication and oil lubrication, the present invention provides ball rolling grooves 2a on both left and right side surfaces along the longitudinal direction. and a moving block 3 assembled to the track rail 2 via a plurality of balls B so as to be relatively movable. A slider 3a provided with a loaded ball rolling groove 3a1 forming a loaded rolling path for rolling and a no-load path 3a2 formed parallel to the loaded rolling path and on which the balls B roll, and the front and rear of the slider 3a. and a circulation member 4 provided between the slider 3a and the end plate 3b. The end plate 3b is provided with an outer peripheral side direction changing portion 3b2 of the direction changing channel, and the circulation component 4 is provided with an inner peripheral side direction changing portion 4a of the direction changing channel. , the circulation part 4 has a connecting portion 4b that connects the inner peripheral direction changing portions 4a located on both left and right sides of the track rail 2, and the end plate 3b has a fitting recess 3b3 that accommodates the connecting portion 4b. A first lubrication groove 3b4 is formed in the joint recess 3b3, and when grease is used as a lubricant, a linear guide that supplies the lubricant using a grease lubrication path formed by the first lubrication groove 3b4 and the circulation part 4. 1 and further provided with a lubrication path component 5 in which a second lubrication groove 5c having a cross-sectional area smaller than that of the first lubrication groove 3b4 is formed, and the lubrication path component 5 is fitted into the first lubrication groove 3b4. and an insertion portion 5b to be inserted into the circulation component 4. When oil is used as a lubricant, the insertion portion 5b is inserted into the circulation component 4 and the fitting portion 5a is inserted into the first lubrication groove 3b4. Provided is a linear guide 1 characterized by supplying a lubricant using an oil lubrication path constituted by the first lubrication groove 3b4 and the second lubrication groove 5c by fitting.

With the linear guide 1 of the present invention, the lubrication path can be widened when lubricated with grease, and narrowed when lubricated with oil, so that good lubrication can be easily achieved.

In addition, by inserting the insertion portion 5b of the lubrication path component 5 into the circulation component 4, the linear guide 1 of the present invention allows the oil to flow through the inner peripheral side direction changing portion 4a and the outer peripheral side direction changing portion 3b2, which constitute the direction changing path. can be easily reached to achieve good lubrication.

Further, the circulation component 4 is formed with a third lubrication groove 4c connected to the first lubrication groove 3b4 or the second lubrication groove 5c. It is preferable that

As a result, when the lubricant is supplied, the lubricant reliably reaches the upper inner peripheral direction changing portion 4a and the lower inner peripheral direction changing portion 4a of the circulation component 4 to lubricate the balls B. As shown in FIG.

Moreover, when viewed along the longitudinal direction of the track rail 2, it is preferable that the thickness of the insertion portion 5b is formed smaller than the thickness of the fitting portion 5a.

Thereby, the insertion portion 5 b of the lubrication path component 5 can be easily inserted into the third lubrication groove 4 c of the circulation component 4 .

An end portion 3b41 of the first lubricating groove 3b4 connected to the outer direction changing portion 3b2 is formed in a tapered shape, and an end portion 5a1 of the fitting portion 5a connected to the insertion portion 5b has a tapered shape corresponding to the tapered shape. is preferably formed at

By forming the end portion 3b41 of the first lubrication groove 3b4 of the end plate 3b in a tapered shape, the pressure of the grease is increased when the grease flows into the direction change passage. better lubrication can be achieved.

Moreover, it is preferable that the lubrication path component 5 is formed with a positioning projection 5e for positioning with the end plate 3b, and the end plate 3b is formed with a positioning hole 3b5 for fitting the positioning projection 5e.

By providing the positioning projections 5e and the positioning holes 3b5 as described above, when the lubrication path component 5 is fitted and inserted into the end plate 3b, the lubrication path component 5 and the end plate 3b can be easily positioned.

Moreover, it is preferable that the center of the positioning hole 3b5 and the center of the lubricant supply hole 3b1 provided in the end plate 3b match.

As a result, when lubricating the linear guide 1 using oil as a lubricant, the oil is supplied directly from the lubricant supply hole 3b1 to the positioning projection 5e that is fitted in the positioning hole 3b5 of the lubrication path component 5. can be easily supplied to the turning path to achieve good lubrication.

Moreover, it is preferable that a part of the second lubricating groove 5c is formed in the positioning projection 5e.

As a result, when inserting the positioning projection 5e into the positioning hole 3b5 of the end plate 3b, the positioning projection 5e can be easily deformed and inserted into the positioning hole 3b5.

Further, it is preferable that ribs 5d are formed on both sides of the second lubricating groove 5c for preventing leakage of oil.

Thereby, in the case of oil lubrication, oil leakage can be prevented.

Furthermore, the present invention provides a lubrication path component characterized by being the lubrication path component 5 in the linear guide 1 of any one of the above embodiments.

By using the lubrication path component 5 as described above for the linear guide, the linear guide can obtain the technical effects described above.

In order to prevent oil leakage and improve sealing performance, the third lubrication groove 4c of the circulation component 4 may be filled with an adhesive or the like after the lubrication path component 5 is attached to the circulation component 4.

As described above, although the preferred embodiments of the present invention have been fully described with reference to the drawings, it is a matter of course that those skilled in the art can appropriately make modifications or changes based on the above embodiments. These variations or modifications are considered to fall within the protection scope of the present invention without departing from the spirit of the present invention.

1 Linear guide (motion guide device)
2 Track rail (track base)
2a ball rolling groove 3 moving block (moving body)
3a slider (moving body main body)
3a1 Loaded ball rolling groove 3a2 No-load passage 3b End plate (cover)
3b1 Lubricant supply hole 3b2 Outer circumference side direction change portion 3b3 Fitting recess 3b4 First lubrication groove 3b41 End portion 3b5 Positioning hole 4 Circulation component 4a Inner circumference side direction change portion 4b Connecting portion 4c Third lubrication groove 5 Lubrication path component 5a Fitting Joint portion 5a1 End portion 5b Insertion portion 5b1 End portion 5c Second lubrication groove 5d Rib 5e Positioning projection 6 Ball holding member 7 Dustproof component 7a Through holes 8a, 8b Screw B Ball (rolling element)

Claims (9)

A track base in which rolling element rolling grooves are formed on both left and right side surfaces along a longitudinal direction;
The moving body includes a load rolling-element rolling groove that forms a load rolling path for the rolling element to roll facing the rolling-element rolling groove, and a load rolling-element rolling groove that is formed in parallel with the load rolling path so that the rolling element can roll. A moving body body provided with a no-load path for rolling, a cover fixed to both front and rear end faces of the moving body body, and a circulation part provided between the moving body body and the lid body and
A direction change path is provided for connecting the loaded rolling path and the no-load path to change the rolling direction of the rolling element, and the cover body is provided with a direction change portion on the outer peripheral side of the direction change path. and the circulation component is provided with an inner peripheral side direction change portion of the direction change path,
The circulatory component has a connecting portion that connects the inner circumferential direction changing portions located on both left and right sides of the track base, and the lid body has a fitting recess that accommodates the connecting portion. A first lubrication groove is formed in
A motion guide device that, when using grease as a lubricant, supplies the lubricant using a grease lubrication path formed by the first lubrication groove and the circulation part,
further providing a lubrication path component in which a second lubrication groove having a cross-sectional area smaller than that of the first lubrication groove is formed;
The lubrication path component includes a fitting portion that is fitted into the first lubrication groove and an insertion portion that is inserted into the circulation component,
When oil is used as a lubricant, the insertion portion is inserted into the circulation component, and the fitting portion is fitted into the first lubrication groove to form the first lubrication groove and the second lubrication groove. A motion guide device characterized by supplying lubricant using an oil lubrication path. A third lubrication groove connected to the first lubrication groove or the second lubrication groove is formed in the circulation component, and the insertion part is inserted into the third lubrication groove when being inserted into the circulation component. The exercise guide device according to claim 1, characterized by: 2. The motion guide device according to claim 1, wherein the thickness of the insertion portion is formed to be smaller than the thickness of the fitting portion when viewed along the longitudinal direction. An end portion of the first lubricating groove connected to the outer direction changing portion is formed in a tapered shape, and an end portion of the fitting portion connected to the insertion portion is formed in a tapered shape corresponding to the tapered shape. 4. The motion guide device according to claim 3, characterized in that: 5. The movement according to claim 4, wherein the lubrication path component is formed with a positioning projection for positioning with the lid, and the lid is formed with a positioning hole for fitting the positioning projection. guidance device. 6. A motion guide device according to claim 5, wherein the center of said positioning hole coincides with the center of a lubricant supply hole provided in said lid. 7. A motion guide device according to claim 5, wherein a part of said second lubrication groove is formed in said positioning projection. 2. A motion guide device according to claim 1, wherein ribs are formed on both sides of said second lubricating groove for preventing leakage of said oil. 9. A lubrication path component, which is the lubrication path component in the motion guide device according to any one of claims 1 to 8.

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